Mechanical movement.



No. 636,254. Patented Nov. 7, I899.

7 AA. GAMBLE.

x MECHANICAL MOVEMENT.

(Application filed Mar. 17, 1899.

I (ModeL) Wczessea- A Inn alibi."

- wv/wfldr wfi UNITED STATES PATENT OFFICE.

ALPHONSO A. GAMBLE, OF GRISWOLD, IOWA.

M ECHANICAL MOVEM ENT.

SPECIFICATION forming part of Letters Patent No. 636,254, dated November '7, 1899.

Application filed March 17, 1899. Serial No. 709,557. (ModeL) To all whom it may concern.-

Beit known that I, ALPHONSO A. GAMBLE, a citizen of the United States, residing at the town of Griswold, in the county of Cass and State of Iowa, have invented certain new and useful Improvements in Mechanical Movements; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to'make and use the same, reference being had to the accompanyin g drawings, and to the numerals of reference marked thereon, which form a part of this specification.

My invention relates to a swinging link-arm; and the object of my invention is to hold firmly in mesh either round or oblong gears, so that I may obtain a longer stroke of apitman on a short leverage, such as is used in lifting water by wind-power.

In the accompanying drawings, Figure 1 is a side view of the entire gear and link. Fig. 2 is a plan view of the same.

2 is a small spur-gear with shaft attached thereto.

3 is one part of the swinging link=arm. 4 is the other part of the swinging link-arm.

5 is the bolt or the journal that connects the link.

slot of the oblong gear 6, and the belt or shaft 5 placed through the hole in the sleeve '7, and thus connecting to the lower end of the swinging link-arms. This forms the entire link, as shown in Fig. 2.

2 is a common spur-gear with a shaft thereto attached ,which shaft should be placedthrough the hole in swinging link-arm 4, which forms a part of the box. This brings the teeth or cogs 2 and 6 in contact with each other. When the small gear 2 is turned around, it causes the oblong gear 6 to pass clear around the small gear 2, and by this mechanism I can obtain any length of a pitman-stroke that I may desire on a very short leverage.

I claim as my invention-- Swinging link-arms, boxes, and a .journal attached to the inner ends of the same, a bolt connecting the swinging link-arms at their other ends, an oblong gear with a slot in the center, said bolt passing through the slot and through the holes in the outer ends of the swinging link-arms and connecting them together, and a'spur-gear attached to a shaft which passes through one of the boxes at the inner ends of the swinging link-arms, sub

stantially as described.

ALPHONSO A. GAMBLE.

Witnesses:

H. M. ORTON,

J. I. MEREDITH. 

